1. Department of Otolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, People's Republic of China.
2. Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, Department of Orthopedic Surgery, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, People's Republic of China.
3. Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China.